JPH02237Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a walking leg mechanism for an animal toy, in which when the animal toy walks by stepping on the left and right legs alternately, the ankle part also swings with the movement of stepping the legs. It provides a realistic walking experience, as if a real animal were walking.

Walking motion in conventional animal toys involves supporting the base ends of the legs on the torso, engaging the middle of the legs with the eccentric shaft of a rotary plate, and rotating the legs in the front-rear direction using the shaft as a fulcrum. Many of them were structured like this. However, in the above configuration, although the ankle portion is provided at the tip of the leg, it is designed to operate integrally with the movement of the leg. Therefore, the legs with such a structure can only be rotated back and forth about the support shaft, which has the drawback that the simple operation makes it easy to get tired of it.

The purpose of this project is to improve the above-mentioned conventional drawbacks, and to separate the walking legs of the animal toy into the upper leg and ankle so that each part can perform separate movements, so that it can perform walking movements similar to those of real animals. This is what I did.

The characteristics of the leg walking mechanism of the animal toy according to this proposal are as follows:
The leg members are supported by a walking drive shaft rotated by a drive mechanism housed in the body, and walk by swinging back and forth, each leg member having a first swing whose upper portion is pivoted to the walking drive shaft. The member is pivotally supported by a shaft pin on the first swinging member, and an eccentric pin provided at the end of the drive shaft is loosely fitted into a long hole provided above the shaft pin, and rotation of the eccentric pin causes the above-mentioned A second swinging member that swings about a shaft pin as a fulcrum, and a second swinging member that is pivotally supported by a shaft pin on the first swinging member, and an engaging protrusion provided above the shaft pin is connected to a long hole in the second swinging member. and an ankle member that is loosely fitted to the shaft, and as the second swinging member swings about the shaft pin as a fulcrum due to the rotation of the eccentric pin, the first swinging member swings about the walking drive shaft as a fulcrum. It is composed of

Hereinafter, embodiments of the leg walking mechanism of the animal toy according to the present invention will be described in detail with reference to the drawings.

first. To explain the outline of the structure of the animal toy shown in FIG. 1, 1 is a toy main body, 2 is a body, 3 is a neck member supported by the body 2, and 6 is a tail member. Projecting from the left and right side surfaces of the fuselage 2 are the ends of a support shaft 17 driven by a flywheel 10 as shown in FIG. 2 housed within the fuselage 2. And the support shaft 17
A pair of left and right walking legs 4, 4 are fitted at each end of the toy body 2 from the outside with their upper ends engaged with support protrusions 5, 5 of the toy body 2. The toy body 1 is placed upright on the floor.

Next, for the drive mechanism built into the fuselage 2, the second
This will be explained with reference to the figures. A flywheel 10 is provided in the body 2 as an example of a drive source for a drive mechanism. One end of the shaft 11 of the flywheel 10 is provided with teeth 12. A slip belt 13 is meshed with this, and the flywheel is pulled to one side. This applies rotational force to the foil 10. The other end of the flywheel shaft 11 is also provided with teeth 14, which mesh with a gear 18 provided on the support shaft 17 via intermediate gears 15 and 16 in a decelerating manner.
The driving force of the flywheel 10 is transmitted.

Next, the left and right walking legs 4, 4 that perform the walking motion
This will be explained with reference to FIGS. 2 and 3. As shown in each figure, the walking legs 4, 4 are connected to the first swinging member 20.
and a second swinging member 3 provided superimposed thereon.
0, and an ankle member 40 that is swingably supported by the first and second swing members 20 and 30.

To explain in order below, the first swinging member 20 is rotatably fitted to the walking drive shaft 17, and is supported so as to swing back and forth using this as a fulcrum. The rotating plate 23 fixed to the shaft end of the drive shaft 17 is located inside the annular member 22 provided on the first swinging member 20. Thus, the first swinging member 20 has an upper support plate 2 provided with an annular member 22.
5 and the lower support plate 21 connected to the lower part of the upper support plate 25, the entire structure is bent in a dogleg shape. The drive shaft 17 is inserted into the shaft hole 22a of the annular member 22.

The second swing member 30 also includes an upper support plate 31 and a lower support plate 32, and forms a dogleg shape similarly to the first swing member 20. The upper support plate 31 is provided with a long hole 33.
The eccentric shaft 24 of the rotating plate 23 is fitted into this elongated hole 33. The first and second swing members 20 and 30 are stacked on top of each other as described above and are commonly pivotally supported by the shaft pin 34.

The lower support plate 32 has a long hole 35, and this long hole 3
A protrusion 44 of an ankle member 40 is loosely fitted into the ankle member 5 .

That is, the ankle member 40 has an upright member 41, and the upper end thereof is provided with a protrusion 44 that engages with the elongated hole 35 described above. At the lower part of the upright member 41, legs 45 each having a T-shape in the front and rear directions,
45 are combined. Further, a shaft pin 43 is inserted into the shaft hole 42 provided in the middle of the upright member 41 and the shaft hole 27 provided in the lower support plate 21 of the first swinging member 20, and the ankle member 40 is inserted with the shaft pin 43 as a fulcrum. is swingably supported.

Therefore, according to the walking legs 4, 4 configured as described above, the left and right eccentric shafts 24, 24 are set to be out of phase by 180 degrees, and as the drive shaft 17 rotates, the left and right eccentric shafts 24, 24 Rotates as a unit with a 180 degree shift. Therefore, each of the left and right eccentric shafts 24, 24
When the second swing member 30 rotates, the second swing member 30 swings about the shaft pin 34 through the long hole 33 as a fulcrum. Further, the swinging of the second swinging member 30 is performed by fitting the protrusion 44 into the elongated hole 35 of the second swinging member 30.
0 as a swing motion with the shaft pin 43 as a fulcrum.

Moreover, the swinging of this ankle member 40 is further
This is transmitted as the swinging motion of the swinging member 20. That is, since the end of the drive shaft 17 freely passes through the shaft hole 22a of the upper support plate 21 of the first swinging member 20, it does not directly receive the rotation of the drive shaft 17 by itself. However, these movements are transmitted through the rocking motion of the second rocking member 30 and the ankle member 40 as a rocking motion of the first rocking member 20 with the drive shaft 17 as a fulcrum.

Viewing the above operation from the side, the left and right walking legs 4, 4 swing around the drive shaft 17 as a walking motion, and when the walking leg 4 steps up slightly, the ankle member 40 also moves forward. The side of the ankle member 40 rotates so that it is slightly lifted up, and when the leg that stepped forward lands, the ankle member 40 rotates again so that it becomes horizontal. The feet move realistically, as if they were actually walking.

As mentioned above, according to the leg walking mechanism according to the present invention,
During a walking motion in which the left and right legs alternately push forward, the ankles move independently and independently from the movement of the upper part of the ankles, and the ankles move forward in a posture that is almost parallel to the floor. Because it protrudes, its movement resembles that of an animal such as an ostrich walking, making it an excellent walking leg mechanism for animal toys that can perform extremely realistic movements.

[Brief explanation of the drawing]

FIG. 1 is an overall side view showing an embodiment of an animal toy having a walking mechanism according to the present invention, FIG. 2 is a perspective view showing walking legs and a drive mechanism, and FIG. 3 is a sectional view of the same side. 2... Body, 4... Leg member, 10... Drive mechanism (flywheel), 17... Drive shaft, 20... First
Swinging member, 24... Eccentric pin, 30... Second swinging member, 33, 35... Elongated hole, 34, 43... Shaft pin, 40... Ankle member, 44... Engaging protrusion.

Claims (1)

[Scope of utility model registration request] The leg members are supported by a walking drive shaft rotated by a drive mechanism housed in the body, and walk by swinging back and forth, each leg member having a first swing whose upper portion is pivoted to the walking drive shaft. The member is pivotally supported by a shaft pin on the first swinging member, and an eccentric pin provided at the end of the drive shaft is loosely fitted into a long hole provided above the shaft pin, and rotation of the eccentric pin causes the above-mentioned A second swinging member that swings about a shaft pin as a fulcrum, and a second swinging member that is pivotally supported by a shaft pin on the first swinging member, and an engaging protrusion provided above the shaft pin is connected to a long hole in the second swinging member. and an ankle member that is loosely fitted to the ankle member, and as the second swinging member swings about the shaft pin as a fulcrum due to the rotation of the eccentric pin, the first swinging member swings about the walking drive shaft as a fulcrum. A walking leg mechanism for an animal toy featuring: